Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading

	Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading
	Wang, Aiqin 2; Pei, Guangxian 1,2; Liu, Xiaoyan 2; Chai, Mengqian 1,2; Zhang, Tao 2
刊名	CHINESE JOURNAL OF CATALYSIS
	2017-09-01
卷号	38 期号:9 页码:1540-1548
关键词	Copper Palladium Single-atom catalyst X-ray absorption spectroscopy Acetylene hydrogenation Excess ethylene
英文摘要	Cu-alloyed Pd single-atom catalysts exhibit excellent catalytic performance for the semi-hydrogenation of acetylene; however, the limit of the Cu/Pd atomic ratio for forming the alloyed Pd single-atom catalyst is ambiguous. Herein, silica-supported Cu-Pd bimetallic catalysts with fixed Pd content and varied Cu loadings were synthesized using an incipient wetness co-impregnation method. The X-ray absorption spectroscopy results indicated that Pd formed an alloy with Cu after reduction at 250 degrees C and that the Pd atoms were completely isolated by Cu for Cu/Pd atomic ratios 40/1. Notably, increasing the reduction temperature from 250 to 400 degrees C hardly affected the catalytic performances of the Cu-Pd/SiO2 catalysts. This finding can be attributed to the similar chemical environments of Pd demonstrated by the X-ray absorption spectroscopy results. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	SINGLE-ATOM ; SELECTIVE HYDROGENATION ; EXCESS ETHYLENE ; CO OXIDATION ; CATALYSTS ; PERFORMANCE ; AG ; NITROARENES ; EFFICIENT ; REACTOR
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000411423600013
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150065]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Catalysis, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Aiqin,Pei, Guangxian,Liu, Xiaoyan,et al. Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading[J]. CHINESE JOURNAL OF CATALYSIS,2017,38(9):1540-1548.
APA	Wang, Aiqin,Pei, Guangxian,Liu, Xiaoyan,Chai, Mengqian,&Zhang, Tao.(2017).Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading.CHINESE JOURNAL OF CATALYSIS,38(9),1540-1548.
MLA	Wang, Aiqin,et al."Isolation of Pd atoms by Cu for semi-hydrogenation of acetylene: Effects of Cu loading".CHINESE JOURNAL OF CATALYSIS 38.9(2017):1540-1548.